Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Multimode fibre"”.
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Advanced fibre-based endoscopy for biophotonics applications
… matter exploits holographic light control in multimode optical fibres. This allows devising min-imally invasive imaging probes with footprints far bellow those of conventional endoscopes, as well as enhanced spatial resolution up to the diffraction limit de-termined by the numerical aperture …
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Holographic Control of Light Propagation in Optical Waveguides
… fields to be imaged and projected through the fibre. Control over light at the fibre tip and along a fibre taper are demonstrated. I present a quantitative comparison between different algorithms for the projection of complex images to the distal facet of a multimode fibre and find that a …
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Accelerated fibre microendoscopy techniques for in-vivo applications
… media, which allows converting a hair-thin multimode optical fibre into an ultra-narrow imaging tool. Compared to current endoscopes based on GRIN lenses or fibre bundles, this concept offers a footprint reduction exceeding an order of magnitude, together with a significant enhancement in …
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Polymer waveguide based optical interconnects for high-speed on-board communications
This dissertation presents a study of multimode polymer waveguide technology for use in board-level communication links for future data centres and supercomputers. The motivation for this work comes from the severe interconnection bandwidth challenges faced by the conventional electrical …
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High-power fibre lasers
… rare-earth (Yb3+, Er3+/Yb3+)-doped fibre lasers. Some of the main capabilities of fibre lasers such as: High brightness and thermal properties were exploited for the development of a variety of continuous wave (CW) and Q-switched devices, whose characteristics also includes …
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Design of indoor communication infrastructure for ultra-high capacity next generation wireless services
… (MIMO) protocols. First, it is shown that fibre links in DAS can be replaced with low-cost, broadband free-space optical links, termed radio over free-space optics (RoFSO) links. RoFSO links enable the implementation of very high density DAS without the need for prohibitively expensive …
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High speed optical communication systems: From modulation formats to radically new fibres
… nonlinear Shannon limit for standard single mode fibre [1,2]. It is in this context that the work on modulation formats, contained in Chapter 3 of this thesis, was undertaken. The work investigates the proposed energy-efficient four-dimensional modulation formats. The work begins by studying a new …